First, always keep in mind that budget cuts, financial constraints, etc., should never be a factor in deciding whether or not a child needs specific services. The team determines needs based on data and then figures out how to meet those needs (sometimes has to think outside the box). From a practical standpoint, yes, you may need to give the school district some grace in figuring out how to provide services if finances are an issue. But bottom line, as Lisa would say, "That's not your problem."
Does she have an IEP? If not, that's your first step. I would suggest that before this school year ends you reach out to the kindergarten principal and request a special education evaluation. This will be conducted at the beginning of the next school year. If she does have an IEP, request a transition meeting with the pre-school and new grade school teams towards the end of this school year to talk about her transitioning to a new school - specifically going from a 7:3 ration to 20 (or more):1 and what her needs will be. Also ask about the expectations of Kindergarten. If there are some she cannot meet, discuss what services need to be in place for her to access FAPE. If it will have been a year since her last evaluation, I would also request a re-evaluation once school starts next fall. You might also request a Functional Behavior Analysis (FBA) to determine the why's and when's to her elopement so that can be addressed in a Behavioral Intervention Plan (BIP).