+1 to the Dawg in that dominance is your friend, I will give a few tips here, I discovered dominance only late last year so I'm not super expert by any stretch but I have personally tried the following suggestions with good results. And if I can do it (as basically a newbie) then you can too. It was suggested to me that either (1) I should try this first with an established sex partner first to gain experience, or (2) I should make sure we both have some drinks first so any sloppiness can be blamed on alcohol... but in retrospect neither was necessary, it went fine every time.
First suggestion is gradual escalation plus good old fashioned persistence. Kiss me here. No. Just a little kiss. No! It's dirty. No it's not -- just a little kiss -- here, like this. No! I cannot! Just half a second, kiss me here. I'm Asian girl, we are conservative, we don't do that. Bullshit, everyone in your country is having oral, they just don't talk about it. They are not! Okay well just the tip of your tongue then -- here, touch it, like this. No! Come on, you will love it. Etc, you get the idea... So persist like fuck in thus manner, eventually say "you are very disobedient and you are going to be spanked if this keeps up". So put her over your knee and spank her hard, try to get the pants down and spank her bare arse, with her yelling "I hate you! You hurt me!" and you saying "remember you can say RED"... in my case she got really upset and sulky so I had to build her up again, kissing her neck etc till she melted, then had her give me handjob again and returning to persisting for oral, eventual compromise reached was she could kiss the side of my shaft and that was ALL, which I agreed to, although we both knew I was lying and would return to persisting for oral next time we met. In truth she wants you to do this, you have to force her to do it so she does not feel dirty, hahaha.
Second suggestion, and this is one of my favourite things to do at the moment, is to explain to her she is going to be tied up and about the code word, then gently tie her hands behind her back, checking with her each hand is not too tight (you can do this anywhere, don't need anything to tie her to). Then say "on your knees" and stand in front of her. Say "do you want my cock?" and whatever she says, slap her hard on the cheek. Yes, what? Yes, please! I find that slapping her gives me an immediate erection, though your mileage may vary. have her say "please fuck my mouth" and then give her the dick, just gently holding her by the cheeks / head (because her hands are tied behind her back) to guide her rhythm.
She will absolutely love you for this.
Also, Richard suggests a completely different angle (seeding and qualification) which I have not tried, being something of a newb, but is far more subtle than what I've suggested above, a little bit manipulative in a good way, and likely to work.
Finally, eat that pussy boy, the last 3 girls I fucked would never have come without oral so it really saved the day, it is vitally important that she comes every time she gets intimate with you. She'll say her pleasure is not important, etc, blah blah, this is just to protect herself from guys who do not know their way around her body and are likely to fuck things up, hurt her or bore her or put pressure on her and force her to fake an orgasm to get him to leave her alone. So just ignore all that, and eat her pussy till she comes, she will love you for ignoring the bullshit and making sure of her pleasure. BTW sounds like your recent lay did not have a hygienic pussy, putting you in Landlord's situation, that's understandable but it's also not normal, 99% of girls are very clean and edible, which is a shame since I like a bit of flavour (tip: eat her after she gets off an international flight before she showers, this will taste just right if she was clean before).
Ray