Hi Danni,
I think it’s a case of a toddler playing and forgetting that they have to make it to the litterbox and don’t get there in time. Why don’t you move the litterbox into the bedroom for now and after you have fed her, wait a few minutes and then put her into the litterbox so she will go. Cats can get really excited when playing (I don’t remember how old your cat is) and especially if you are playing with her on the bed, which really isn’t a good idea especially if you are wanting her to sleep with you at night there. She is going to associate the bed with playtime and won’t settle down when it’s time to sleep. You will also need to wash your blankets that have pee on them with an enzymatic cleaner (spray with that first, then wash) so she can’t smell pee on them and continue to keep doing it.
Another thought: if she continues to do this, you may want to make an appointment with the vet. If she could have a URI (urinary tract infection) or crystals in her bladder, it can be painful. If she associates the litterbox with pain, she will look to go somewhere else.
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