How to cope with guilt for my daughter ttc baby #2

Amy

I no this might sound crazy to some but my daughter is 4.5 we have been ttc for nearly 2 years.. she is desperate to be a big sister and everyone around us is too she doesnt have any cousins yet as her dad is an only child and my brother isnt ready for that .. she is the most friendliest kindest girl i have ever met but every single day i feel the horrible gut wrenching feeling of guilt bcos she hasnt got a sibling to play with it makes me feel sick to my stomach sad and very guilty and l panic daily that the gap will be too big but its out of my control how can i deal with this until the time comes as im really struggling at times with it 😓