What To Do...

Back story. My Father in Law is over 80 and lives with us. He had a dog who was quite an issue for us due to its love for only him and poor manners. It would go into my sitting room and pee on my things. So my husband made a house rule that the dog must stay in my FIL's room. 

Also back story. My FIL is my nearly 4 year olds best friend. And I will be quite honest in my jealousy over this relationship. My son has often cried bitterly at having to spend time with us and away from Pa because he wouldn't get to watch what he wanted or play with certain toys. It hurts my heart to feel second to anyone at this young age. So when my youngest started to toddle around I made it very clear he was not allowed in Pa's room. For MANY reasons. Like dog food in reach, paints, ECT ECT ECT. But most of all because I do not want to lose my last child to him. I want as much time being my son's beat friend as I can before he deserts me for Pa or anyone else. 

Today the dog, 15 years old, had a final health problem that was dire enough to warrant him being put down. My heart is so hurt for my FIL. While I may not have liked the dog (he peed on my things often) I understand the love one has for their pet, especially after so many years. I worry so much now that my FIL will give up living without his constant companion. This makes me want to let my baby in with Pa while he's here, but my heart is bitterly sore over the thought of him wanting Pa more than me the way his brother does. 

Will my 3 year old be enough to keep his grandpa grounded her for a few more years, long enough for my sweet baby to be old enough to be away from my all day long? Or will my sweet baby miss out on any part of a relationship with Pa, whether he will be old enough to remember it or not?