DSS is coming to live with us for 4 months, whilst his mum has made a last-minute decision to study in another part of the country. We are looking forward to having him full-time and getting quality time together but were given 2-weeks’ notice of her plans, and DSS goes to school 40km round trip away, so we’ve had to make a few changes to our routine to be able to get him to and from school. We’ve overall been flexible and supportive because we want the best for DSS. She is due to leave in 36 hours and we have now been asked to also take one of their family pets. The animal is exotic, so fairly low maintenance BUT we are on holiday for 3 weeks during the 4-month period, so will need to ask our pre-arranged house sitter if they will take on the extra responsibility. Frankly, I don’t want to muck them about and risk them turning around and saying they don’t want to house sit anymore due to us adding last minute responsibilities, leaving us stuck without a solution for DDog. It’s just another example in a long list of scenarios where DSS’s mum has dropped us in it at the last minute and I just don’t need the extra work. AIBU to say no?