My lovely sister died earlier this year. She left behind 40 beautiful crocheted squares, which feels like an absolute gift. I want to sew them together to make a blanket. I'm a pretty good sewer/darner so that bit is okay but I'm not sure what to do with the dangly threads (see pic). Do I cut them back to the knot or weave them back in? What would be neatest and less likely to make it all unravel? Any advice much appreciated :)