mom issues

Let me start off by saying its been about a year since me nd my husband helped my mom out by having her stay with us. She was in a rough spot by not having anywhere to go, no car, no job etc. Now she has a job across from where we live, and a used car. And now we charge her a couple hundred dallors to live with us due to her working and using our shower, electric, laundry and so forth. We only charge her a little to help her out and to watch my toddler when we need her. Which is rare. All i ask is she cleans up after herself and helps when we need her to. So these last few months have been so irritating my 2nd son is due next month, and i feel like i have to treat her like a kid because she cant do the easiest tasks. For example, cleaning up her dishes even though i make the dinners and bring it to her and she cant bring her plate to the sink and wash it. Not only do we have limited space in our apartment. Im starting to loose my patience. I really thought she would change and be there to support me and help. Since she didnt when i was growing up, but nope nothing the same. Am i wrong for wanting her to leave a couple weeks after the baby? I feel like shes only going to cause more stress at this point. Sorry this is so long.