while withdrawing is a sugary sweet sensation that can drive a woman to orgasm, After a time and you are in a nice slow rhythm she may even ask you to fuck her harder. depending on your skill, her comfort level and your position you may want to manipulate her pussy , be sure to use your other hand, meaning do not use the hand you used to open up her ass, use the other clean hand, For obvious reasons you should never stick anything that has been in her ass into her pussy without thoroughly washing it{ fingers, toys, your cock etc.} even if there is no sign of mud on them, or if she can ask her to masturbate as you fuck her. Sometimes stimulating her pussy while you're in her ass may be too much for her, but in time she will enjoy it. You should discuss all the steps and what you what you plan to do.
My wife s a bbw but I can’t fuck her ass. My cock is too big so I let our bi male friend do it. His cock is smaller and sticks out straight as opposed to mine curving upwards