Text stored in memory will be either single character ascii text or unicode. If it's single character text, there is a good chance it will be null-terminated (end with ascii 0). So you figure out where a string ends pretty easily.

Text stored in memory as text is not broken up, unless the program storing the text allocated a series of string array elements piecemeal or the data is stroed in a linked list.

You should not need a filter. It should read in just fine.
If it was stored as a linked list, there will be 4 byte blocks of junk at the start and at the end of the blocks. The text pieces may not be in any order.